[fix] bundle properties placeholder format (#8115)

Single-quotes have a special meaning in properties bundles and so we
need to use `"`.


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Author: pq

flutter-idea/src/io/flutter/FlutterBundle.properties

@@ -230,8 +230,8 @@ npw_platform_web=Web
 npw_platform_windows=Windows
 npw_platform_selection_help=When created, the new project will run on the selected platforms (others can be added later).
 npw_none_selected_error=At least one platform must be selected
-npw_invalid_org_error=Invalid organization name: '{0}' - cannot end in '.'.
-npw_invalid_desc_error=Invalid package description: '{0}' - cannot contain the sequence ': '.
+npw_invalid_org_error=Invalid organization name: "{0}" - cannot end in ".".
+npw_invalid_desc_error=Invalid package description: "{0}" - cannot contain the sequence ": ".
 flutter.module.create.settings.platforms.label=Platforms:
 flutter.sdk.invalid.json.error=Invalid Json from flutter config
 change.color.command.text=Change Color